Patents by Inventor Michihisa Katada

Michihisa Katada has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for improving the quality of the fragrance of perfumes using aliphatic dibasic acid diesters
    Patent number: 4110626
    Abstract: A method for improving the quality of the fragrance of a perfume or a perfume composition by adding thereto a specific perfume controlling agent which improves emission of a perfume or a perfume composition and its tenacity (fixing effect), and which is an aliphatic dibasic acid diester of the general formula:R.sub.1 OCOR.sub.2 COOR.sub.3wherein R.sub.1 and R.sub.3, which may be the same or different, each represents a saturated branched chain alkyl group containing 4 or 5 carbon atoms, and R.sub.2 represents a saturated straight chain alkylene group containing 4 carbon atoms, as an active ingredient.
    Type: Grant
    Filed: January 27, 1977
    Date of Patent: August 29, 1978
    Assignee: Shiseido Co., Ltd.
    Inventors: Michihisa Katada, Katsutake Hayashi, Hakuji Katsura, Kenichi Tomita, Hideo Morohoshi, Keiichi Uehara, Hiroshi Tanaka